Valve for steam cookers



Filed Jan.` 2, 1935 FZ 52X ansa vsavs rca STEAM coo et y Alfred Eckert, Berlin, Germany, assor to A control valve for cooking utensils using steam under pressure is known which consists of a valve casing secured to the cooking utensil or v to its lid, and a needle or piston valve which at the one end controls an opening into the cooking utensil and at the other ,end engages under a weight so mounted as to be capable of swinging and sliding on the valve casing, the said weight controlling a signal whistle while being adjustably held in whatever position it may be in by a spring which engages with the pivotal centre pin of the weight. The pivotal centre pin of the weight is advantageously so disposed that when the weight is moved into one end position it rocks about the centre pin and in doingso strikes for example against a lever connected tothe valve' spindle and releases the latter, so that the spindie rises, in order that when the pressure in the cooking utensil falls considerably below that of the atmosphere air can enter the cooking utensil andso allow the lid to be lifted oi. e

The present invention relates to a modiiied form oi' such a control valve and-consists in providing on the valve body an adjustable member by means of which to cover and uncover the openings in the valve body. v

t This modiilcation of the control valve aords the following meat advantages:

The control valve can be converted into an orgo.- dinary steam valve when there is a danger of the whistle not being heard-when, for

eple, a short while the room in which the cooking is being done. In this case all that is necessary is .as to set the adjustable member (which for example may be formed asa rotating closure member) for the whole time of absence, in such a way that the openings in the valve body are uncovered in which case the valve will function as a steam e0 valve. O'n the return to the room where the coomng is being done therotating closure member is reset so that the openings inthe valve body are covered. and thus the valve can again act as a quick-operating valve for cooking uten- A further advantage is that the combination valve according to the invention converts the utensil to a universal cooker in that it permits it to be utilized as a quick-acting cookl ing utensil, when it is desired to cook heavy, solid foods, and by using it also as a casserole for the cooking, for example, of tender vegetables, for stewing fruit and vegetables and so on.

The accompanying drawing illustrates by way January 1B, 1934 it should become necessary to leave for a, mh H- e. 1935, serian No. as

of example one construction of the valve accordm ing to the invention.

Figure 1 is a section, on an enlarged scale, of the valve tted on a lid.

Figure 2 is a side elevation, and

Figure 3 is a front elevation.

Referring to the drawing the valve accor to the invention consists of a casing a, b in two parts connected together by a screw thread c. The part b is formed at its perforated bottom part as a seat for the valve needle d, and it is screw-threaded at its lower extremity at e for convenient insertion into-the lid ,f and to enable it to besecured to the lid in the usual nner bymeans of a nut g.

The part a is centrally bored to allow the passage and protrusion of the valve needle d. The centrally bored part a is furthermore provided with a lateral opening to accommodate the whistle h.

A cover i screwed to the part b is provided with holes lc to enable the steam to pam from the cooking utensil into the cover i.

Above the part a there is provided arotata ring l having any desired number of holes m, Vwhich can be brought into coincidence with holes n in the part b of the casing. When the holes in the two parts coincide, the steam escapes i inside the valve through the holes m, n, in which case the valve acts as an ordinary steam valve. In the other casethat is to say, when therotatable ring l obturates the holes'n-the valve acts as a quick-acting valve for cooking utensils.

The weight o is mounted to rotate and slide on a pin` q, which is secured to guide extensionlsrgg;B p on thepart a and extends through a slot r in the weight o.. The width of the slot r is equal to the diameter of the pint.V y

In order to make it possible on the one hand for the weight to be easily moved and on other hand for it to be held positively in the set position, locking depressions or notches are provided in a spring disposed above and below the pin q, for example, a leaf spring s secured at one en d and provided with resilient depressions or notches t into any one Vof which the pin q can drop. The depressions or notches t in the spring s are spaced apart to correspond to the adj ments to be made; in accordance with coo practice. a

The weight o may, for example, be in the form of a sleeve having an insulated handle u at one end and the vspring may then be clamped or otherwise secured, for example with one end between the handle and the sleeve. f

If the pressure in the cooking utensil is so much below atmospheric that the lid cannot be lifted, the weight o is moved as faras possible over to the left over the rotating pin q, and swung upwardly. The weight o then strikes against the free arm of a two-armed lever u mounted in the part a of the casing, imparting to the lever v a rotary movement and in this way lifting the valve needle from its seat so that air can pass through the holes m, n, into the cooking utensil.

I claim:

1. A regulating and safety device for steam cooking utensils comprisinga valve casing having a first aperture for admitting steam from a given utensil to said casing, a second aperture, and at least one third aperture towards the open air, a valve member adapted to close said rst aperture, externally controllable means for adjustably loading said valve member, means for removing said valve member from said rst aperture, arranged in cooperation with said externally controllable means to hold said valve removed ing a rst aperture for admitting steam from a'.

given utensilv tosaid casing, a second aperture, and third apertures towardsthe open air, a valve member adapted to close vsaid rst aperture and to permit steam to reach said second and said third apertures when removed from said ilrst aperture, externally controllable means for adjustably loading said valve member, means for .removing said valve member from said rst aperture, a signalling device in communication with said casing through said second aperture, and a sleeve with apertures in its wall corresponding with said third apertures, said sleeve being rotatably mounted on the outside of said casing to selectively control said third apertures and to thereby divert the steam either wholly or partly from said signalling device.

3. A regulating and safety device for steam cooking utensils comprising a valve casingr having avrst aperture for admitting steam from a given utensil to said casing, a second aperture and third apertures towards the open air. a valve member adapted to close said rst aperture, and to permitsteam'to reach said second and said being adapted to remove said'valve from said iirst third apertures when removed'from said ilrst aperture, a signalling -device in communication with said casing through said second aperture; a pivotally mounted two-armed weighted lever. means for adjustably altering the position of 3 said lever in relation to its pivot and tov resiliently hold it in its adjusted position, means for removing said valve member from said rst aperture, one arm of said weighted lever being adapted to load said valve member in various positions of said weighted lever in order to keep saidV valve member closing said irst aperture against a steam pressure below a desired limit, and adjustable means on the outside of said casing for closing and opening said third apertures to selectively control them and to thereby divert the steam either wholly or partly from said signalling device.

4. A regulating and safety valve for a steam cooking utensil comprising a substantially cylin- 20 drical casing provided with a rst aperture in its bottom for admitting steam from the cooking utensil to said casing, with a second aperture in its side wall, with a peripherical groove on` the outer surface of its side wall, and with third aper- 25 tures in its side wall ending in said groove, a signalling device in communication with said casing through said second aperture, a valve member adapted to close said rst aperture, said valve member so arranged and constructed as to permit 30 steam to pass from said iirst to said second and aperture, a second pivotally mounted two-armed weighty lever on top of -said casing, means for. adjustably altering the position of said second lever in relation to its pivot and to resiliently 45 hold it in its adjusted position. one arm of said second lever adapted to bear on the other arm` of said iirst lever for removing said valve member from said ilrst aperture when said second lever is in one of its end positions, and the other arm of said second lever being adapted to bear on the top of said valve member in other positions of said second lever, in order to urge said valve member towards said first aperture.

Amnn'r. 55 

